Lasting-machine head



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G. W. GOPBLAND, J. E. CRISP, 8v E. F. GRANDY. LASTING' MAGHINB HEAD.

N0. 439,051. Patented 001;. 21, 1000.

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G. W. GOPELAND, J. E. CRISP, & E. F. GRANDY.

LASTING MACHINE HEAD.

N0. 439,051. Patented Oct. 21, 1890.

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GEORGE WV. COPELAND, OF MALDEN, JOSEPH CRISP, OF SOMERVILLE, AND EDVARD F. GRANDY, OF BOSTON, MASSACHUSETTS.

LASTING-MACHINE HEAD.

SPECIFICATION forming part of Letters Patent No. 439,051, dated October 21, 1890.

Application filed July 16, 1890. Serial No. 358,879. (No model.)

To @ZZ whom it may concern:

Be it known that we, GEORGE W. COPE- LAND, of Malden, and JOSEPH E. CRISP, of Somerville, both in the county of Middlesex and Commonwealth of Massachusetts, and EDWARD F. GRANDY, of Boston, in the county of Suffolk, in said Commonwealth, have invented certain Improvements in Lasting-Wlachine Heads, of which the followingis a specitication.

This invention relates to means for swinging and holding ixed at any desired angle with reference to the base of the lasting-head, the lasting-plates carried therein, also to means for preserving the auxiliary frictional covering of the lasting-plates from injury in the tack-driving process, and to permit the tack to be driven closer to the plates. These objects are accomplished by the use of mechanism described and illustrated in the following specification and accompanying drawings, forming a part thereof, in which- Figure l is a plan of the improved lastinghead. Fig. 2 is a side elevation thereof. Fig. 3 is a front elevation. Fig. 4. is a front elevation, partly in section, showing the lastingplates swung to one extreme position. Fig. 5 is a plan of one of the lasting-plates. Fig. G is a side elevation of Fig. 5. Fig. 7 is a plan of the carriers for the auxiliary frictional covering. Fig. 8 is an elevation of Fig. 7.

The lasting-plates herein described have substantially the same construction and mode of operation as those described in the Letters Patent for lasting-machines granted to George W. Copeland and Joseph E. Crisp, March, 1890, and the lasting-heads are operated as described in said patent.

The base of the lasting-head A has pockets A', one each side thereof, containing spiral springs A2 of sufficient strength to sustain the lasting-plates againstthe pressurebrought upon them while the upper leather is being shaped around the toe or heel of the last. The upper ends of these spiral springs carry caps or centers A3, upon which rests a thin plate B, interposed between the springs A2 and the lasting-plates B'. The plate B is connected to an upper plate B2 by the pivot-pins of the cam-rolls which guide the lasting-plates during their folding motions, so that the lasting-plates B move between the plates B and B2. The upper plate B2 has a groove C formed in its top side. Fitted to slide therein is the bar C, and fixed to the base A are the lugs A4, 5 5 which lugs hold the barC down in the grooves C', so as to keep t-he bottom plate B close to and parallel with the face of the base A, as shown by Fig. 3. This construction and combination of parts hold the lasting-plates cor- 6o rectly against lateral strains, and the springs A2 always preserve the relations of bar and groove when the lasting-plates are swung to conform to cross-angles of the last operated upon.

By reference to Fig. 3 it will be seen that the bar C has its out-er ends formed into opposite inclines, which inclines commence ata point'a little inside of thelugs Al when the bar C is centrally located, as in said figure, 7o and that reciprocating this double ended wedge or bar C in either direction will allow the spring A, that is positioned under t-he wedge, moved under a lug toward the center of the lasting-head, to swing the lasting-plates to an angle with reference to the base A, as shown by Fig. 4, where the bar C is shown as moved to the extreme left. It will also be seen, first, that the point upon which these plates swing is not. in the median line of the 8o last, but is the point of contact of one of the straight parts of the bar C with one of the lugs A4 and is outside of the lasting-plates; second, that the spring, which is inactive in swinging and holding the lasting-plates to the desired angle acts to produce frictional contact between the straight part of the bar C and the lug that it may be under suflicientto hold the incline at the opposite end locked where desired, so as to give the proper angle to the lasting-plates, and, third, that no amount of strain applied to the lasting-plates in the process of ironing down the upper can change the angular position or set of the lastingplates, because the strain increases equally upon the straight part of the bar C, which is under the lug, and the wedge of the opposite end. This double-ended Wedge or bar C can be reciprocated by any desired method; but the lever C2., fulcrumed to the top plate B'2 at C3, fullls all necessary requirements.

In the patent to Copeland and Crisp, before IOO referred to, there have been described and claimed auxiliary frictional coverings for the lasting-plates, which are used during the upper motion of the lasting-head to form the upper around the toe of the last before the lasting-platos commence their folding action, and in said patent the coverings are described as fixtures.

It has been found advantageous to have the frictional covering withdrawn back of the Working-edge of the lasting-plates during the tacking of the upper to the inner soles to prevent injury to its working-edge by the nozzle of the tacking implement and to give more room for tacking, particularly when the upper is short. l This is accomplished by forming the curved groove D2 in the upper face of the lasting-plate, as shown by Figs. 5 and 6, and fitting thereto the sliding carrier D, to which carrier is secured an elastic facing D.

The sliding bar of the carrier D is made of such length and is so fitted to the groove D2 that the facing D can be projected, as required, beyond the working-edge of the lasting-plates or withdrawn back therefrom sufficiently to fulfill all required conditions.

The carrier D is operated by connecting the links B3 to its rear end, Fig. l, (instead of directly to the lasting-plates as in theformer patent,) so that the lost motion between the carrier D and the lasting-plates B must be taken up before motion can be communicated to the lasting-plates, and this reciprocation of the carrier-slide in Ithe groove D2 causes the frictional covering to always be in advance of the lasting-plates when the lasting-plates are moving forward, and causes the covering to recede back of the edge of the lasting-plates upon the first part of the backward motion of the links B and there rest during the tacking on of the upper, when .the lasting-plates are fully drawn back for another operation forward.

The bar C, if desired, could be .fitted to the lugs A4 With'its ends bent to the angles of the inclines formed `upon said bar, and of course operate without springs to give the angular positions to the lasting-plates, as herein described.

Having thus fully described our invention, what we claim, and desire to secure Vby Letters Patent, is-

1. In'a lasting-machine, the base of the lasting-head having pockets, springs contained in said pockets provided with caps or centers, a thin plate mounted on the springs, a superimposed plate above the thin plate and the lasting-plates movable between the said plates by mechanism substantially as described.

2. In a lasting-machine, the base of the head provided with pockets, springs contained in said pockets provided with caps or centers, lasting-plates and mechanism, substantially as described, for moving them, apertured lugs at the sides of the head, and a Wedge-bar for engaging the apertures in the lugs, whereby the lasting-plates are capable of fixed adjustment at any desired .angle laterally from a point located near the edge of the head, substantially as described.

3. In a lasting-machine, the combination of the lasting-plates, and an auxiliary device comprising carriers mounted in the lastingplates and having their projecting ends conforming to the edges of the plates and covered with leather or analogous material, and mechanism, substantially as described, for moving the covered projecting ends to precede the lasting-plates in their forward and backward movements, substantially as described.

4. In a lasting-machine head, lasting-plates carried thereby, and mechanism under the control of the operator for adjusting them to normal position laterally from a point located near one edge of said head as said plates areswung from right to left, or vice versa, substantially as shown and described.

GEO. W. COPELAND. JOS. E. CRISP. EDWARD F. GRANDY.

Witnesses:

MARY E. WooDBURN, J oHN L. S. ROBERTS. 

